You may already have written descriptions for your products even before installing Hengam Descriptions. When you want to publish your newly generated descriptions, you have multiple options:
You can put your new description:
After your original descriptions
Before your original description
Instead of your original description
You also have the option to Save this action as your default option.
You can access this placement option in Settings as well. For that, you need to go to General settings:
You can see the option of choosing the placement of your descriptions there.